As far as specification is concern, there is not much news about it however since very new iPhone are launched with latest iOS. So iPhone 7 will going to feature new OS i.e. iOS 9 which possibly be announced latest by September 2015.

If we talk about the screen size, the device is going to feature a little bigger screen than its predecessors i.e. iPhone 6 bend and 6 Plus which measure screen size of 4.7 and 5.5 respectively. Therefore the new iPhone will probably feature 5.5 screen size with IPS display. As far as camera is concern, iPhone 7 will sport improved 10 megapixel camera with optical image stabilization technique.